In a turbocharged vehicle experiencing low power, what could be a potential cause?

In a turbocharged vehicle, the turbine and impeller are critical components that work together to compress air and increase engine power. If the impeller is worn, it may not be able to effectively compress and direct the intake air into the engine. This wear results in reduced airflow and less boost pressure, which directly impacts the engine's power output.

A worn impeller can lead to inefficient turbocharger performance, meaning the engine may not achieve the expected power levels. The turbocharger depends on the condition of the impeller to generate the necessary boost for optimal engine performance. Hence, if the impeller is compromised, the engine will likely experience symptoms such as low power and responsiveness.

While the other options, such as a weak fuel pump, a stuck wastegate, or a damaged intercooler, may certainly contribute to performance issues, the direct connection between a worn impeller and its effect on power creates a clearer scenario for low power in a turbocharged system.